Valve



Feb. 5, 1935. H. E ELLE 1,989,721

VALVE;z

Filed Aug. '7, 1951 Vntented Feb? i935 y unirse STATI-:s PATENT OFFICE- VALVE Herbert E. Toelle, Milwaukee, Wil., assigner to Milwaukee Gas Specialty Company, .'f'ilwaukce, Wis., a corporation ci Wisconsin Application August 7, 1931, serial No. 555,695

1a emma. (el. esl-isz) This invention -reletes to valves, particularly set too low to maintain the burner lighted and to valves for use in connection with gas burners. Ln opening tne valve by means of the present in- More particularly, this invention relates to vention causes it to be opened at once to a. safe valves of the type in which the valve element is minimum value. operated manually to control the now of gas for Another feature oi the present invention re- 5 the burner. Such valves are commonly prosides in the wiping action of the valve on the vided in the nozzle pipes leading from the gas 'valve seat, which wiping action-keeps the coopmanifold to feed pipes which are connected to erating smiaces of the valve and valve seat clean the burners and have opening means for the and` assures proper alignment of the same at all m admission of sir, but it is to be understood that times. Y the present invention is not to be limited to the Another Objectis to provide aslmple and sturdy particular positioning or use of the valve. construction with few parte.

It is well known that in the use oi gas ranges, The invention is illustrated in the accompanyit is sometimes desirable to turn the burner ame ing drawing. in which: 1 5 down relatively low. Thisispsrticularly so where Figure l is e Side elevational View of a'. valve 15 the burner is e, simmering burner, or where the embodying the present invention; regularburner is set to simmer the contents oi Figure 2 i8 ell mi Vertical Section thereof, the vessel on the range. partially in elevation; end The present valves for controlling the flow ci Figure 3 is a plan View O en arrangement em 2g ges to the burner are subject to the 'criticism bodyins the vslve shownin Figures 1 and 2. 20 that they iney be turned orv set down too low orA Referring te the drawing, the 1151131 BBS maniopened insufficiently to maintain the burner nome feld iS indicated et i The ses burner is indilighted. Where the burner is set too low or Gebed et l. this blmer being fed from the maniopened insuinciently, the burner flame will be ex- :fold 4 by the usual feed pipe 2, to which sir is tinguished and the escape of gas will be entailed. admitted et 3 in the S1181 W85'. GaSeOuS fuel 18 25 With the devices prior to my invention there leed inte feed Pipe 2 by We?! 0f e valve body 5 is no provision for-preventing setting the burner and e nozzle tube 13, from the manifold 4. control valve too low, and there is no wey of 'H18 Veil/e body 5 1S Shown having 811 inlet Openknowing when the setting is too low to maintain ine 6, adapted i0 Communicate With the interior the burner lighted, of e. g'as manifold or supply pipe The valve 30 The present invention provides means for prebody 5 1S provided with threads, shown at 7, for venting setting of the valve means away from but the purpose 0f Securely Connecting the valve with too close to its seat to maintain the desired supthis ses Supply Ppe. ply through the vslve, and particularlyasumcient The upper portion of the valve body 5 has a supply oi gas to maintain the burner lighted. recessed portion, indicated by reference numeral 35 This is accomplished with the present invention 8, and is provided with an opening 9, through by providing means for automatically closing the which a valve stem 10 is adapted i0 DHSS. 'I'he valve from positions too neer closed position to recessed Opening 3 iS @revided with Suitable maintain the desired supply therethrough. The packing 11, which 1S Secured in Place 'Dy means 4o minimum .open position in which the valve will of a washer l2. The upper end 0f the COIltlOl 40 remain open may vary under different conditions. Stem 10 hes e reduced Portieri 13, as shown in In its broader aspects the present invention re" dotted lines in Figure 2, and e. handle 14, of any sides in the provision of a valve having means for Suitable or desired type, 1S POSitOned Over the automatically closing the valve element where it reduced portion 13 of the stem l0 and securely is opened insumciently to maintain the desired held in place by means oi a, screw 15 adapted 45 supply through the valve, More psrticu1ar1y,the to be threaded into the upper end of the stem 10. present invention provides means for automati- The valve body 5 is provided at its outlet end cally closing the valve from all positions between with a. hexagonal flange 16, provided for the closed position and e. predetermined setting aw ay purpose of threading the valve body into the gas 5D from closed position, and still more particularly manifold. Projecting from this anged portion 50 from all positions between closed position and a 16 is an exteriorly threaded nipple 17, to which predetermined setting which will poss the miniis secured the tube 18, the restricted outlet 18' mum amount of gas for maintaining the burner of which discharges into the, feed pipe 2. lighted. As shown in Figure 2, the valve body 5 is pro- The valve of the present invention cannot be vided at its lower extremity with a threaded 55 that the safe minimum faA hollow member or plug'o, which is adapted to be threaded into the vaive body and which has the gasket 21 for providing a gas tight connec tion therewith. Y The'upperportion of the plug 20` forms a valve seat 22 for the valve member 23. Secured to'and integral with the member 23 is a depending cam portion`24, adapted to project into a recess 23A provided in the plug 20. The plug 20 has an interior chamber 26, which provides intermediate chamber between the inlet d and the outlet chamber 27. A connectmg channel 28 is provided in the valve .body 5 and leads from a port 29 provided in thej plug Zonta the c-utlet chamber 2'?. -Theport 29? communicates with the interior or intermediate chamber; 26 of the plug member 20, and with the adjacent end ofthe passage 28. 'I'he valve 23 has a raised portion 3G, about which the adjacent end of a coiled spring ,31de arranged for normally maintaining the valve in elosed position. The other end of the spring 31 bears against the washer 12 of the packing gland. Cam member 24 is provided at its lower end with a cam portion or surface 32. As shown, lthe cam portion 32 cooperates with a pin 33, suitably threaded, as by means of screw 34. into thev bottom of the plug member 20. It is to be understood that two such cam surfaces 32 may be provided on opposite sides or the cam member 24 for the purpose of preventing unequal stresses to be set up in the valve during rotation thereof;

When the valve is in closed position. as shown in Figure 2, the pin 33 abats against the vertical portion 35 extending from the cam surface. As the valve is rotated in a counter-clockwise direction (Fig. 2) by means of the handle 14, the pin 33 engages the -cam surfaceshown at 36, and the valve begins toopenfAs long as the valve is not opened to a position where the pin passes the point 37- of the cam portion, release of the handle i4 will cause the valve to snap to closed position, due to the spring 31 and the relatively sharp inclination of the cam surface 36. As the valve is further rotated in a counterclockwise direction, the pin 33 engages in the slightly grcoved portion 38 of the cam surface. It is at point open position of the valve provided. As the valve is rotated in a counter-clockwise direction beyond this pointthe pin 33 tends to force the cam and associated valve portion upwardly against the pressure of the spring 31, to

l the full Voperi position of the valve. Upon closing' of the valve, the pin member again reaches the grooved portion 38 of the cam surface, and the valve may be left in this position it is to be desired that the burner ileme burn relatively low, as, for example, for the purpose of simmering the contents of the vessel thereon. As soon as the point 37 of the cam surface passes the pin 33 in the closing movement ci the valve, the valve, due to the sharp inclination of the cam surface 36,4 is closed autematically by the spring 31 and remains closed until, in the opening movement vof the valve, the sharply inclined surface 36 is moved past the pin 33. By threading the screw 34 inwardly or outwardly with respect to member 20, the safe minimum open position of the valve may be varied es desired, depending upon the fuel and other considerations. 1f the screw is threaded inwardly, the pin 33 is raised, and consequently the valve member will not be maintained in open position until it has attained a eorrespondngly raised position. Similarly, if the ly: inclined surface is moved screw is threaded outwardly, the safe minimum openposltionithevslvememberwillbesta' l imum einen position.

In= this manner, when the attendant to close the valve beyond a safe.`value, the valve automatically slides downward to fully closed sition by reason of the sharp depressioni in th cam surface. In the'same manner, inopenlng the valve, it will not remain open until the sharp= past the pil-3 33 and 'lgs assures opening to the desired ue. l

In .the particular valve kcoristructiim shown there is some clearance ,between the valve e1e' ment 23and the pin 33 as indicated at 40. This permits turning movement of the valve member on its seat before the valve begins to open and after the valve is closed, and wiping action wipes thecooperating surfaces to maintain them free of foreign matter, thereby assuring a gas tight closure and proper alignment at all times.'

.It is to be understood that when the valve is opened beyond engagement of the grooved portion 38 with the pin 33 or beyond minimum openposition, the gradual inclination of the cam portion 32V permits the valve to remain in any 'position of cooperation of this surface 32 with the pin 33, and, therefore. in ,any Open position beyond the minimum setting. n

I do not intend to be limited to the details shown and described. l

.I claim:

l. In combination, a valve member. a seat for said valve member, means yieldingLv pressing the valve member toward said seat,'and interengaging cam means for opening said valve member against said yieldingly pressing means by turning movement of the valve member, said cam means including a cumming surface, adapted to release said yieldingly pressing means so that said means will close the valve member automatically from position away from but too close to said seat to maintain a desired minimum flow through the valve, and also including a surface adapted to cam said valve mein-ber ,to full open position, one part of said cam means being adjustable to vary the position of said valve member in accordance with the minimum flow of fuel desired through seid valve.

outlet openings and `having a valve seat, vvalve means for seatingy on said seat, cam means integral with said valve means, and means carried by said plug fer engaging said cam means to open the valve upon actuation of said cam means.

3. In a. valve, a valve body having inlet and outlet epenings therein, a', plug member in saidvalve body forming a chamber therein com= municeting with said inlet and outlet openings, valve means seating on said plug to close said chamber from the inlet opening, cam means carried by said valve means and positioned in said chamber, and means for engaging said cam ,means to open said valve upon actuation of said valve means, means positioned in said valve body for actuating said cam member to open the valve when said valve means is moved in one direction, said cam member having the portion of oi' its caming surface initially engaged by said cam member actuating means adapted to effect the release of said yieldingly closing member to permit "closing of said valve means thereby until a minimum open position has been reached, said cam member having the remaining portion of its camming surface engageable by said cam member actuating means to move said valve means into intermediate positions between said minimum'open position and full open position and to maintain it in said positions.

5. In a valve, a valve body having inlet and outlet openings, a valve member, cam means carried by said member, a recessed plug in said valve body Dmviding an intermediate chamber between 'said inlet and outlet openings and also providing a seat for said valve member, and a pin carried by said plug engaging said cam means upon rotation of said valve member.

6. In a valve, a valve body having inlet and outlet openings therein, a valve member, cam means integral with said valve member, a hollow plug in said valve body providing an intermediate lchamber between said inlet and outlet openings and forming a seat for said valve member, said cam means extending into said chamber, and an adjustable and removable pin carried by said plug and adapted to engage said cam means upon rotation of said valve member.

7. In a valve,I a valve body having inlet and outlet openings therein, a valve member, cam means integral with said valve member, a hollow plug in said valve body providing an intermediste chamber between said inlet and outlet openings and forming a seat for said valve member, and an adjustable pin carried by said plug and adapted to engage said cam means upon rotation of said valve member, said pin and cam means lying wholly within the chamber formed by said plug.

8. In a valve, a valve body having inlet and outlet openings, a valve member, cam means disposed below and integral with said member, a recessed plug in said valve body providing a valve seat, an adjustable and removable pin carried by said plug and adapted to cooperate with said cam means, said pin having lost motion connection with said cam means, and a passageway between said recessed plug and said outlet opening.

9. In combination, a valve body having a valve seat, a valve member normally urged toward said seat, and means engaged by said valve member upon rotation thereof for raising said valve member above said seat, the engagement between said valve member and said raising means being such as to permit said valve member to return to said seat automatically until after a predetermined raised position has been attained, said raising means being adjustable to vary said predetermined raised position.

10. In combination, a valve body having a valve seat therein, a rotatable valve member normally urged toward said seat and having a depending cylindrical portion, a cam surface formed in the periphery of said cylindrical portion, said cam surface having a gradually sloping portion and a relatively steep sloping portion with a notched portion therebetween, and a cam pin projecting into said valve body and adapted to engage said cam surface for raising said valve member above said seat upon rotation thereof, the engagement of said pin and surface providing for automatic return of said valve member to said seat as long as said pin engages the relatively steep sloping portion of said cam surface.

11. In combination, a valve body having a valve seat therein, a rotatable valve member normally urged toward said seat and having a depending cylindrical portion, a cam surface formed in the periphery of said cylindrical portion, said cam surface having a gradually sloping portion and a relatively steep sloping portion, and a cam pin projecting into said valve body and adapted to engage said cam surface for raising said valve member from said seat upon rotation thereof, the engagement of said pin and surface providing for automatic return of said valve member to said seat as long as said pin engages the relatively steep sloping portion of said cam surface, and

'providing for maintenance of said valve in raised vposition upon engagement of said pin with the gradually sloping portion of said cam surface.

12. In a valve, a valve body having a valve seat therein, valve means cooperating therewith, cam

means comprising a cam member carried by said valve means and projecting pin means positioned in said valve body for engaging said cam member to open the valve upon rotation of said valve means, said cam member having a sharply inclined camming surface and a relatively slightly inclined surface, said pin means engaging said sharply inclined surface upon initial rotational movement of said valve means. and spring means for closing said valve means when said pin means is engaged upon said sharply inclined surface, said spring means being ineiIective to close said valve means when said pin means engages said slightly inclined surface whereby said valve means is maintainable in adjusted positions to vary the flow of fluid through said valve only after said slightly inclined surface moves into engagement with said pin means.

13. In a valve for controlling the supply of gas to a gas burner, a valve member, a seat for said valve member, spring means urging said valve member toward said seat, a cam engaging pin, a camming surface on said member adapted to be engaged by said pin upon rotation of said member to cam said member from fully closed to fully open position, said camming surface having a portion providing for automatic movement of said valve member to closed position under the inuence of said spring means from positions less than a safe minimum open position of said valve member capable of maintaining` suflicient flow of fuel through the valve to maintain the burner lighted, said cam pin having adjustable means for varying said safe minimum open position of said valve member. 

